SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: The server requested authentication method unknown to the client
mysql error number: 2054
Date: 19.04.2024 @ 08:42
Script: /board/formmail.php?threadid=926&sid=987f779d11e4b0a606044183bb10a3a2
Referer: